Fig. 14

Scenario 5: It assumes the same topology as in scenario 2; however, now all the four sinks are made mobile around the walls of the ward. All the sinks start moving from center of the wall, then move in one direction, come back towards the center and then move in the opposite direction and finally come back again towards the center. The sinks move altogether. This combined movement facilitates the body relays of all the patients to consume less energy consumption as compared to all the other scenarios. This is due to decrease in the communication range between the body relay and sinks. Mobility of multiple sinks helps in increasing the network lifetime and reducing the delay in transmitting the data. In this scenario, each of the body relays communicates with the minimum distant sink. The communication flow is body sensors to body relay to the nearest moving sink (Sink1 or Sink2 or Sink3 or Sink4)